CN111661911B - Method for removing organic pollutants in water - Google Patents

Method for removing organic pollutants in water Download PDF

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Publication number
CN111661911B
CN111661911B CN202010488431.2A CN202010488431A CN111661911B CN 111661911 B CN111661911 B CN 111661911B CN 202010488431 A CN202010488431 A CN 202010488431A CN 111661911 B CN111661911 B CN 111661911B
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water
ferrate
organic pollutants
paa
peroxyacetic acid
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CN111661911A (en
Inventor
杨涛
吴思思
刘敏超
郏建波
郭琳
李玉瑛
汪涛
刘长宇
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Lvyiyue (Guangdong) Environmental Technology Co.,Ltd.
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Wuyi University
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/722—Oxidation by peroxides
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/34—Organic compounds containing oxygen
    • C02F2101/345—Phenols
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/38—Organic compounds containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/40—Organic compounds containing sulfur
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The invention discloses a method for removing organic pollutants in water, which comprises the following steps: firstly, adding peroxyacetic acid into water containing organic pollutants, then adding ferrate, and stirring for reaction; according to the molar ratio, the ratio of peroxyacetic acid to ferrate is 1: 36-8: 1. The invention adds PAA and ferrate into the sewage in turn under specific conditions, so that PAA is effectively activated to generate highly oxidative free radicals, thereby enhancing the removal effect of PAA on organic pollutants in water. Compared with only using PAA, the method provided by the invention has the advantages that the removal effect on organic pollutants is obviously improved, and the types of the organic pollutants capable of being removed are also obviously increased.

Description

Method for removing organic pollutants in water
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a method for removing organic pollutants in water.
Background
Most of organic pollutants in the water body are toxic and harmful substances, and the organic pollutants have high stability in the water body, are difficult to biodegrade, have bioaccumulation and can be enriched through a food chain, so that the ecological environment and the human health are harmed.
At present, the treatment method of organic pollutants in sewage generally comprises the following steps: physical treatment, chemical treatment and biological treatment. Among them, the method commonly used in the chemical treatment includes an oxidation treatment method, i.e., a method of oxidatively decomposing pollutants in wastewater by using a strong oxidizing agent to purify the wastewater. The strong oxidant can gradually degrade organic matters in the wastewater into simple inorganic matters, and can also oxidize pollutants dissolved in water into substances which are insoluble in water and easy to separate from the water.
Peroxyacetic acid, also known as peracetic acid, abbreviated as PAA in English, has a molecular formula of CH3CO3H. PAA is a strong oxidant, the reduction potential of the PAA is 1.0-1.96V, the PAA has the functions of efficiently and quickly killing bacterial propagules, spores and the like, and almost no toxic products are formed, and the PAA is taken as a traditional oxidant in the prior artThe substitute of chlorine is widely used for infectious disease disinfection, drinking water disinfection, food disinfection and the like. Again due to the high pK of PAAa(8.2) characteristics that make it exist mainly in the neutral form even in weakly alkaline water, while the neutral form of PAA has a stronger oxidizing power than the anionic form, which makes it more feasible in wastewater treatment. However, PAA has high selectivity, and the effect of treating organic pollutants in water by using PAA alone is not ideal, and the PAA cannot effectively remove a plurality of organic pollutants.
Disclosure of Invention
Based on the above, in order to solve the defects and shortcomings in the prior art, the invention uses ferrate to activate PAA, generates highly oxidative free radicals, and obviously improves the removal effect of organic pollutants.
The invention aims to provide a method for removing organic pollutants in water, which activates PAA (poly (acrylic acid)) to generate high-oxidizing free radicals by sequentially adding PAA and ferrate into the water according to a specific ratio, so that more organic pollutants which are difficult to degrade are effectively removed.
In order to realize the purpose, the technical scheme adopted by the invention is as follows:
a method for removing organic contaminants from water, comprising the steps of: firstly, adding peroxyacetic acid into water containing organic pollutants, then adding ferrate, and stirring for reaction; according to the molar ratio, the ratio of peroxyacetic acid to ferrate is 1: 36-8: 1. At the molar ratio, the effect of activating peroxyacetic acid can be achieved, but the activation effect is weaker when the proportion of peroxyacetic acid is too large, and the cost is higher when the proportion of ferrate is too large.
Preferably, the molar ratio of the peroxyacetic acid to the ferrate is 1: 1-1: 3. At the molar ratio, the peroxyacetic acid can obtain more sufficient activation and the cost is reasonable.
More preferably, the molar ratio of peroxyacetic acid to ferrate is 1: 2. At this molar ratio, the peroxyacetic acid is most effective in activating and removing organic contaminants.
Preferably, the pH value of the water containing the organic pollutants is 5-8. Under the pH condition, the hair is soakedThe method has better removal effect on organic pollutants. In some embodiments, the reaction can be carried out by adding NaOH or H2SO4Inorganic bases or inorganic acids are used to adjust the pH of the water.
In the invention, the adding sequence of the PAA and the ferrate is one of the key factors for realizing the high-efficiency activation of the PAA, and the PAA and the ferrate are added into the water in the sequence of the invention, so that the PAA can be effectively activated, high-oxidizing free radicals are generated, and the removal effect of organic pollutants is improved. Because ferrate has strong oxidizability and has certain reactivity with pollutants, if ferrate is added firstly and then PAA is added, part of ferrate is consumed, so that the activity of the ferrate on the PAA is weakened, and the removal effect of organic pollutants is reduced.
Ferrate is a green oxidant, does not produce secondary pollutants in the process of being reduced, does not cause harm to human beings and the environment, and Fe produced by the reduction3+And Fe (OH)3Has strong flocculation activity and can aggregate suspended matters in water to form sediment.
Preferably, the peroxyacetic acid is added to the peroxyacetic acid aqueous solution with the mass percentage concentration of 15-30%. Therefore, the using effect and the using safety of the peroxyacetic acid can be ensured.
Preferably, the ferrate comprises at least one of sodium ferrate and potassium ferrate.
Preferably, the stirring reaction time is 3-20 min.
Preferably, the organic contaminants include at least one of carbamazepine, sulfamethoxazole, diazepam, trimethoprim, erythromycin, ibuprofen, naproxen, nitrobenzene, estrone, estradiol, estriol, isoflavone, dichlorvos, chloramphenicol, penicillin, diclofenac, pentachlorophenol, hexachlorocyclohexane, carbofuran, bis-p-chlorophenyltrichloroethane, dichloroethylene, tetrachloroethylene, benzene, toluene, styrene, benzopyrene, epichlorohydrin, chlorobenzene, vinyl chloride, bisphenol a, bisphenol S, diatrizoic acid, diethyl phthalate, dibutyl phthalate, polychlorinated biphenyl. The organic matters are difficult to degrade in water, and the method has a good removal effect on the organic pollutants.
Compared with the prior art, the invention has the following advantages: the PAA solution and ferrate are added into water under specific conditions, so that the PAA is effectively activated, and high-oxidizing free radicals are generated, thereby enhancing the removal effect of the PAA solution on organic pollutants in water. Compared with only using PAA, the method has the advantages that the removal effect on organic pollutants is obviously improved, and the types of the organic pollutants capable of being removed are also obviously increased.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention is further illustrated by the following examples. It is apparent that the following examples are only a part of the embodiments of the present invention, and not all of them. It should be understood that the embodiments of the present invention are only for illustrating the technical effects of the present invention, and are not intended to limit the scope of the present invention.
Example 1
Sewage treatment containing 8 mug/L bisphenol A, 300 mug/L naproxen and 800 mug/L penicillin: adjusting the pH of the sewage to 7; then adding PAA solution with the mass fraction of 30% into the sewage according to the addition amount of 20mg/L (0.08mmol/L), and then adding potassium ferrate into the sewage according to the addition amount of 31.7mg/L (0.16 mmol/L); stirring and reacting for 15min at the speed of 600 r/min; after the reaction is completed, the content of organic matters in the water is detected, and the results are as follows:
the content of bisphenol A is 0.4 mu g/L, and the removal rate is 95 percent;
the content of naproxen is 0.6 mu g/L, and the removal rate is 99.8 percent;
the content of penicillin was 4.0. mu.g/L, and the removal rate was 99.5%.
Example 2
Sewage treatment containing 8 mug/L bisphenol A, 300 mug/L naproxen and 800 mug/L penicillin: adjusting the pH of the sewage to 7; then adding PAA solution with the mass fraction of 30% into the sewage according to the addition amount of 30.4mg/L (0.12mmol/L), and then adding potassium ferrate into the sewage according to the addition amount of 23.8mg/L (0.12 mmol/L); stirring and reacting for 15min at the speed of 600 r/min; after the reaction is completed, the content of organic matters in the water is detected, and the results are as follows:
the content of bisphenol A is 1.6 mu g/L, and the removal rate is 80 percent;
the content of naproxen is 43.2 mug/L, and the removal rate is 85.6 percent;
the content of penicillin was 80.0. mu.g/L, and the removal rate was 90%.
Example 3
Sewage treatment containing 8 mug/L bisphenol A, 300 mug/L naproxen and 800 mug/L penicillin: adjusting the pH of the sewage to 7; then adding PAA solution with the mass fraction of 30% into the sewage according to the addition amount of 15.2mg/L (0.06mmol/L), and then adding potassium ferrate into the sewage according to the addition amount of 35.6mg/L (0.18 mmol/L); stirring and reacting for 15min at the speed of 600 r/min; after the reaction is completed, the content of organic matters in the water is detected, and the results are as follows:
the content of bisphenol A is 1.4 mu g/L, and the removal rate is 82.5 percent;
the content of naproxen is 41.0 mu g/L, and the removal rate is 86.3 percent;
the content of penicillin was 86.5. mu.g/L, and the removal rate was 89.2%.
Comparative example 1
Sewage treatment containing 8 mug/L bisphenol A, 300 mug/L naproxen and 800 mug/L penicillin: adjusting the pH of the sewage to 7; then adding potassium ferrate into the sewage according to the addition amount of 31.7mg/L (0.16mmol/L), and adding PAA solution with the mass fraction of 30% into the sewage according to the addition amount of 20mg/L (0.08 mmol/L); stirring and reacting for 15min at the speed of 600 r/min; after the reaction is completed, the content of organic matters in the water is detected, and the results are as follows:
the content of bisphenol A is 2.4 mu g/L, and the removal rate is 70 percent;
the content of naproxen is 105.0 mu g/L, and the removal rate is 65 percent;
the penicillin content was 256.0. mu.g/L, and the removal rate was 68%.
Comparative example 2
Sewage treatment containing 8 mug/L bisphenol A, 300 mug/L naproxen and 800 mug/L penicillin: the treatment was similar to example 1 except that comparative example 1 did not add potassium ferrate and the amount of the PAA solution having a mass fraction of 30% was 60.8mg/L (0.24 mmol/L). After the reaction is completed, the content of organic matters in the water is measured, and the results are as follows:
the content of bisphenol A is 7.2 mu g/L, and the removal rate is 10 percent;
the content of naproxen is 255.0 mu g/L, and the removal rate is 15 percent;
the content of penicillin is 744.1 mug/L, and the removal rate is 7%.
Comparative example 3
Sewage treatment containing 8 mug/L bisphenol A, 300 mug/L naproxen and 800 mug/L penicillin: the treatment was similar to example 1, except that comparative example 1 was made without adding PAA and potassium ferrate was added in an amount of 47.5mg/L (0.24 mmol/L). After the reaction is completed, the content of organic matters in the water is measured, and the results are as follows:
the content of bisphenol A is 4.4 mu g/L, and the removal rate is 45 percent;
the content of naproxen is 147.3 mug/L, and the removal rate is 50.9%;
the penicillin content was 320.0. mu.g/L, and the removal rate was 60%.
Comparative example 4
Sewage treatment containing 8 mug/L bisphenol A, 300 mug/L naproxen and 800 mug/L penicillin: adjusting the pH value of the sewage to 9; then adding PAA solution with the mass fraction of 30% into the sewage according to the addition amount of 20mg/L (0.08mmol/L), and then adding potassium ferrate into the sewage according to the addition amount of 31.7mg/L (0.16 mmol/L); stirring and reacting for 15min at the speed of 600 r/min; after the reaction is completed, the content of organic matters in the water is detected, and the results are as follows:
the content of bisphenol A is 4.2 mu g/L, and the removal rate is 47.5 percent;
the content of naproxen is 171.0 mug/L, and the removal rate is 43 percent;
the content of penicillin is 496.3 mu g/L, and the removal rate is 38 percent.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (6)

1. A method for removing organic pollutants in water is characterized by comprising the following steps: firstly, adding peroxyacetic acid into water containing organic pollutants, then adding ferrate, and stirring for reaction; the molar ratio of the peroxyacetic acid to the ferrate is 1: 1-1: 3, and the pH value of a reaction system in the stirring reaction process is 5-8.
2. The method for removing organic contaminants from water of claim 1, wherein the molar ratio of peroxyacetic acid to ferrate is 1: 2.
3. The method for removing organic pollutants from water as claimed in claim 1, wherein the peroxyacetic acid is added as an aqueous peroxyacetic acid solution with a mass percentage concentration of 15% to 30%.
4. The method for removing organic contaminants from water of claim 1, wherein the ferrate comprises at least one of sodium ferrate and potassium ferrate.
5. The method for removing organic pollutants in water according to claim 1, wherein the stirring reaction is carried out for 3-20 min.
6. The method of claim 1, wherein the organic contaminant comprises at least one of carbamazepine, sulfamethoxazole, diazepam, trimethoprim, erythromycin, ibuprofen, naproxen, nitrobenzene, estrone, estradiol, estriol, isoflavone, dichlorvos, chloramphenicol, penicillin, diclofenac, pentachlorophenol, hexachlorocyclohexane, carbofuran, bis-p-chlorophenyltrichloroethane, dichloroethylene, tetrachloroethylene, benzene, toluene, styrene, benzopyrene, epichlorohydrin, chlorobenzene, vinyl chloride, bisphenol a, bisphenol S, diatrizoic acid, diethyl phthalate, dibutyl phthalate, polychlorinated biphenyl.
CN202010488431.2A 2020-06-01 2020-06-01 Method for removing organic pollutants in water Active CN111661911B (en)

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Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101088926A (en) * 2006-06-12 2007-12-19 深圳职业技术学院 Combined water-treating farrate-fenton reagent process
CN101475248A (en) * 2009-01-19 2009-07-08 中山大学 Water coagulation processing method
CN101759275A (en) * 2010-01-07 2010-06-30 浙江工商大学 Method for removing organic pollutant in water
US20140319078A1 (en) * 2013-04-29 2014-10-30 Luisa Kling Miller Process and system for removing urea from an aqueous solution
US10259729B2 (en) * 2014-09-04 2019-04-16 Clean Chemistry, Inc. Systems and method of water treatment utilizing reactive oxygen species and applications thereof
CN105084507A (en) * 2014-12-23 2015-11-25 郑州大学 High-iron bauxite-hydrogen peroxide combined water treatment method
CN108046404B (en) * 2017-12-20 2020-04-10 浙江省环境保护科学设计研究院 In-situ chemical oxidation remediation method for organic-polluted underground water
CN108002513A (en) * 2018-01-11 2018-05-08 苏州科技大学 A kind of method for activating organic peroxide degradation of dye waste water
US20230002258A1 (en) * 2018-05-03 2023-01-05 Headworks Bio, Inc. Systems and methods for oxidizing disinfectants combined with moving bed biofilm reactors
CN108855083B (en) * 2018-07-05 2021-01-29 西南交通大学 Method for removing sulfonamides in water by activating peracetic acid with modified zeolite
US20200131068A1 (en) * 2018-10-25 2020-04-30 AHPharma, Inc. Clarifying, filtering and disinfecting processing water for reuse
CN109231412A (en) * 2018-10-25 2019-01-18 西南交通大学 A kind of method that ferrous ion activation Peracetic acid removes Diclofenac in water removal
CN109607741A (en) * 2018-12-19 2019-04-12 苏州科技大学 A method of being simple and efficient tetracycline in degradation water
CN112675851B (en) * 2020-12-25 2023-03-10 浙江理工大学 Fe-MOFs peroxyacetic acid catalyst and preparation method and application thereof

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